Pipe bending machine

Abstract

The invention relates to a pipe bending machine, and belongs to the technical field of the pipe machining treatment. The pipe bending machine comprises a machine frame and a machine head installed onthe machine frame, wherein the machine head comprises a swing arm, a circular mold, a clamping mold assembly, a guide mold assembly, a driving main shaft and a pipe bending motor; the pipe bending motor drives the circular mold and the swing arm to rotate around the axis of the driving main shaft through the driving main shaft so as to perform pipe bending operation on the a pipe; the clamping mold assembly comprises a clamping mold holder and a clamping mold, the clamping mold is movably arranged on the clamping mold holder so that when the clamping mold and the circular mold cooperatively clamp a pipe, the clamping mold can be adapted to rectifying of the axial direction of the clamping mold cavity of the clamping mold to the axial direction of the clamped portion of the fitted pipe. Dueto the fact that the clamping mold is movably arranged on the clamping mold holder so that the clamping mold can clamp the pipe better along with the circular mold, slipping of the pipe in the pipe bending process can be effectively reduced, and the machine can be widely applied to the fields of air conditioners, aviation and the like.

Description

technical field [0001] The invention relates to pipe material processing equipment, in particular to a pipe bending machine. Background technique [0002] Pipe bending machines are widely used in manufacturing industries such as air conditioners, automobiles, ships, and aerospace. They usually include a frame, a control unit, a feeding trolley, a mold guide unit, and a machine head installed on the frame and controlled by the control unit; the machine head includes Swing arm, round die, clamping die installed on the swing arm to clamp the pipe together with the round die, and a pipe bending motor that drives the round die and the swing arm to rotate around the axis of the drive shaft through the drive spindle to bend the pipe, Among them, the circular die is used to control the radius of the elbow. [0003] The notification number is that a kind of pipe bender is disclosed in the patent literature of CN206405223U, as its attached figure 2 As shown, its machine head include...

AI Technical Summary

Problems solved by technology

Since the clamping mold is installed on the clamping mold base 31 using a dovetail keyway structure, it is convenient for the assembly connection between the two and the fixed connection through bolts; however, when the verticality between the bottom surface of the clamping mold base and the clamping mold installation surface is not good or the When the parallelism between the mounting surface of the mold and the clamping surface is not good, it is difficult to ensure that the clamping end surface of the clamping mold is arranged parallel to the clamping end surface of the round mold, that is, it is difficult to ensure that the axis of the clamping cavity and the axis of the circular cavity are arranged in parallel, so that The clamping cavity and the round cavity are in the shape of a bell mouth, which leads to the problem of slipping when the clamp is not tight when bending the pipe, and it is difficult to ensure the quality of the bending pipe

[0004] Publication number is disclosed in the patent document of CN105598296A a kind of pipe bending machine component, as its attached figure 1 As shown, it includes a circular mold 1, a clamping mold assembly and a guide mold assembly, the clamping mold assembly includes a clamping mold 2, and the guide mold assembly includes a guide mold 3; it can be seen that both the clamping mold 2 and the guide mold 3 are It is installed on the mounting seat through the dovetail keyway structure, which not only has the above-mentioned problem that the clamping cavity and the round cavity are trumpet-shaped and cannot clamp the pipe tightly, but also has the axial direction of the guide cavity of the guide die 3 and the pipe to be bent. The axis of the axis is not parallel and it is difficult to carry out the problem of auxiliary push

[0005] In addition, in the existing pipe bending machine, a chain is used to connect the pipe bending motor and the drive spindle, and the use of the chain will lead to serious wear and tear, which is prone to the problem of low stability of pipe bending accuracy

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